Spelling & Commonly Confused Words — Complete BCS Guide

Concept

Spelling questions in BCS test your ability to identify the correctly spelled word from four options, or to spot the misspelled word. The English language borrows from Latin, Greek, French, and German, making spelling irregular and unpredictable. However, BCS examiners favor certain words that students commonly misspell — particularly words with double letters, silent letters, or unusual letter combinations. Commonly confused words test whether you know the difference between similar-sounding words (homophones) or similar-looking words.

Key Lists / Tables

30+ BCS Tested Correct Spellings

Common Misspelling	Correct Spelling	Memory Trick
Accomodate	Accommodate	2 c's + 2 m's (big enough to accommodate both)
Agressive	Aggressive	2 g's + 2 s's
Beautyful	Beautiful	beauti + ful
Buisness	Business	bus + i + ness
Calender	Calendar	ends in -ar (not -er)
Cemetary	Cemetery	all e's: c-e-m-e-t-e-r-y
Committe	Committee	double m + double t + double e
Definately	Definitely	finite is in the middle
Diarhoea	Diarrhoea	double r + oea
Embarass	Embarrass	double r + double s
Enviroment	Environment	iron is in the middle (env-iron-ment)
Foriegn	Foreign	e before i (exception to i before e rule)
Goverment	Government	govern + ment (keep the n)
Grammer	Grammar	ends in -ar (not -er)
Independant	Independent	ends in -ent (not -ant)
Liason	Liaison	li-ai-son (ai in the middle)
Millenium	Millennium	double l + double n
Neccessary	Necessary	1 collar (c), 2 socks (s)
Occassion	Occasion	2 c's but only 1 s
Parliment	Parliament	par-lia-ment (i-a in the middle)
Pronounciation	Pronunciation	no "o" after "n" (pronun-, not pronounc-)
Recieve	Receive	i before e EXCEPT after c
Recomend	Recommend	1 c + 2 m's
Seperate	Separate	"a rat" in the middle (sep-a-rat-e)
Succesful	Successful	double c + double s + ful
Tommorow	Tomorrow	1 m + 2 r's? No — 1 m + 1 r + row
Untill	Until	only 1 l (but "till" has double l)
Vaccum	Vacuum	1 c + 2 u's
Ocurrence	Occurrence	double c + double r
Harrass	Harass	1 r + 2 s's (NOT double r)

15+ Commonly Confused Word Pairs

Word 1	Word 2	Key Difference
Accept	Except	Accept = receive willingly; Except = excluding
Advice	Advise	Advice = noun (a piece of advice); Advise = verb (I advise you)
Affect	Effect	Affect = verb (to influence); Effect = noun (the result)
Complement	Compliment	Complement = complete/enhance; Compliment = praise
Eligible	Illegible	Eligible = qualified; Illegible = cannot be read
Eminent	Imminent	Eminent = famous/distinguished; Imminent = about to happen
Principal	Principle	Principal = head/main/capital; Principle = rule/belief
Stationary	Stationery	Stationary = not moving; Stationery = writing materials (e for envelope)
Their / There / They're	—	Their = possessive; There = place; They're = they are
Weather	Whether	Weather = climate; Whether = if (a choice)
Lose	Loose	Lose = fail to keep (verb); Loose = not tight (adjective)
Desert	Dessert	Desert = dry land (1 s); Dessert = sweet food (2 s's — you want more)
Quiet	Quite	Quiet = silent; Quite = fairly/completely
Beside	Besides	Beside = next to; Besides = in addition to
Its	It's	Its = possessive (the dog wagged its tail); It's = it is

BCS Shortcuts (Mnemonics & Grouping Tricks)

Double Letter Memory Tricks:

• Accommodate: 2 c's + 2 m's — big enough to accommodate double of both
• Committee: double m, double t, double e — the committee has pairs of everything
• Necessary: 1 collar (c), 2 socks (s) — a shirt has 1 collar and you wear 2 socks
• Embarrass: 2 r's + 2 s's — you turn Really Red and feel So Silly
• Occasion: 2 c's but only 1 s — two cars can only park in one space
• Occurrence: 2 c's + 2 r's — things occur in pairs
• Separate: there's "a rat" in separate

Confused Words Quick Mnemonics:

• Stationery has an e for envelope; Stationary has an a for at rest
• Dessert has double s because you always want a second helping
• Principal is your pal (the school head); Principle is a rule
• Affect = Action (verb); Effect = End result (noun)

Solved Examples (5 BCS-style MCQ with Explanations)

Q1. Which spelling is correct?

• (a) Accomodate (b) Accommodate (c) Acommodate (d) Acomodate
• Answer: (b) Accommodate — Two c's and two m's. This is one of the most commonly misspelled words in English and a BCS favorite.

Q2. Choose the correct sentence:

• (a) His advise was useful (b) His advice was useful (c) His advize was useful (d) His advic was useful
• Answer: (b) His advice was useful — "Advice" is the noun (a piece of advice). "Advise" is the verb (I advise you). Here we need the noun.

Q3. The correct spelling is —

• (a) Seperate (b) Separete (c) Separate (d) Separite
• Answer: (c) Separate — Remember: there is "a rat" in separate (sep-a-rat-e).

Q4. "The _____ of the school addressed the students."

• (a) Principle (b) Principal (c) Princpal (d) Principel
• Answer: (b) Principal — Principal = the head of a school (your pal). Principle = a rule or belief.

Q5. Which word is misspelled?

• (a) Committee (b) Occurrence (c) Millenium (d) Environment
• Answer: (c) Millenium — The correct spelling is Millennium with double l and double n.

Common Mistakes — Watch Out!

• Double letter traps: Accommodate (cc, mm), Committee (mm, tt, ee), Necessary (one c, two s's), Embarrass (rr, ss), Occurrence (cc, rr). BCS loves testing whether you know which letters are doubled.
• Pronunciation vs spelling: "Pronunciation" does NOT have "pronounce" in it — it is pronun-ci-a-tion, not pronounc-i-a-tion.
• Until has one L but "till" has two — this catches many students.
• Harass has one R — many people write "harrass" incorrectly.
• Calendar and Grammar both end in -ar, not -er.
• Cemetery has all e's — no a's anywhere.

Question Pattern Recognition

• "Which is correctly spelled?" — Four options, one correct. Look for double-letter patterns first.
• "Which is misspelled?" — Three correct, one wrong. Scan for the most suspicious double letters.
• "Fill in the blank with the correct word" — Tests confused word pairs. Read the sentence context carefully.
• BCS most tested spellings: Accommodate, Separate, Committee, Necessary, Occurrence, Pronunciation, Millennium, Embarrass.
• Strategy: Focus on the 30 words in the list above. BCS draws from this pool repeatedly.